How much do you know about the installation of stainless steel instrument pipes?
Instrumentation tubes must first be mechanically removed of stolen items and blown clean with compressed air prior to installation. The compressed air used should be clean and dry. When using the air test tube, attention should be paid to the change of air pressure in the test tube due to temperature changes. Therefore, the test should be performed after the temperature of the tube is equal to the ambient temperature. Another point is to be careful to avoid the test during the test. Accidental heating and cooling.
When hydrostatically testing, the irrigation water should enter at the lower point and the air in the pipe should exit along the highest point. It should also be considered that the static pressure varies between the highest point and the lowest point, especially when testing low-pressure pipes. Therefore, for low-pressure pipelines below 0.1MPa, air is generally used instead of water for air tightness testing.